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Hexagon HVX (target/hexagon) instruction utility functions 

Functions to support scatter/gather
Add new file to target/hexagon/meson.build

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
This commit is contained in:
Taylor Simpson 2021-03-10 19:38:45 -06:00
parent 9f1f2fe51e
commit 82f8b3dce2
3 changed files with 73 additions and 0 deletions
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1
target/hexagon/meson.build
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@ -174,6 +174,7 @@ hexagon_ss.add(files(
'printinsn.c',
'arch.c',
'fma_emu.c',
'mmvec/system_ext_mmvec.c',
))
target_arch += {'hexagon': hexagon_ss}

47
target/hexagon/mmvec/system_ext_mmvec.c Normal file
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@ -0,0 +1,47 @@
/*
* Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "mmvec/system_ext_mmvec.h"
void mem_gather_store(CPUHexagonState *env, target_ulong vaddr, int slot)
{
size_t size = sizeof(MMVector);
env->vstore_pending[slot] = 1;
env->vstore[slot].va = vaddr;
env->vstore[slot].size = size;
memcpy(&env->vstore[slot].data.ub[0], &env->tmp_VRegs[0], size);
/* On a gather store, overwrite the store mask to emulate dropped gathers */
bitmap_copy(env->vstore[slot].mask, env->vtcm_log.mask, size);
}
void mem_vector_scatter_init(CPUHexagonState *env)
{
bitmap_zero(env->vtcm_log.mask, MAX_VEC_SIZE_BYTES);
env->vtcm_pending = true;
env->vtcm_log.op = false;
env->vtcm_log.op_size = 0;
}
void mem_vector_gather_init(CPUHexagonState *env)
{
bitmap_zero(env->vtcm_log.mask, MAX_VEC_SIZE_BYTES);
}

25
target/hexagon/mmvec/system_ext_mmvec.h Normal file
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@ -0,0 +1,25 @@
/*
* Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef HEXAGON_SYSTEM_EXT_MMVEC_H
#define HEXAGON_SYSTEM_EXT_MMVEC_H
void mem_gather_store(CPUHexagonState *env, target_ulong vaddr, int slot);
void mem_vector_scatter_init(CPUHexagonState *env);
void mem_vector_gather_init(CPUHexagonState *env);
#endif